Display substrate and related devices

ABSTRACT

A display substrate and related devices are provided. The display substrate includes a plurality of first sub-pixels, second sub-pixels and third sub-pixels. In a first direction, the first sub-pixels and the third sub-pixels are arranged alternately to form a plurality of first sub-pixel rows, the second sub-pixels form a plurality of second sub-pixel rows, the first sub-pixel rows and the second sub-pixel rows are arranged alternately in a second direction, connection lines of center points of two first sub-pixels and two third sub-pixels form a first virtual quadrilateral, the two first sub-pixels are located at two vertex angles of the first virtual quadrilateral which are opposite to each other, one second sub-pixel is located within the first virtual quadrilateral, and the first virtual quadrilateral includes two interior angles each being equal to 90° and two interior angles each being not equal to 90°.

CROSS-REFERENCE TO RELATED APPLICATION

This application is the U.S. national phase of PCT Application No.PCT/CN2020/132838 filed on Nov. 30, 2020, the disclosure of which isincorporated in its entirety by reference herein.

TECHNICAL FIELD

The present disclosure relates to the field of display technology, inparticular to a display substrate, an organic electroluminescencedisplay panel, a high-precision metal mask and a display device.

BACKGROUND

An Organic Light Emitting Diode (OLED) display device is one of hotspots in the research field of flat panel display. As compared with aliquid crystal display, the OLED display device has such advantages aslow energy consumption, low production cost, self-luminescence, wideviewing angle and fast response speed. At present, in the field of flatpanel display, a conventional liquid crystal display (LCD) has begun tobe replaced with the OLED display device.

A structure of the OLED display device mainly includes a base substrateand pixels arranged in a matrix form on the base substrate. Generally,in each pixel, an organic electroluminescent structure is formed at acorresponding pixel position on the array substrate by using an organicmaterial through vapor deposition technology with a high-precision metalmask.

A size of each opening in the high-precision metal mask directlydetermines a size of a sub-pixel. However, due to a limitation of amanufacturing process of the high-precision metal mask, it is difficultto acquire a high-resolution display device based on a conventionaldisplay substrate.

SUMMARY

A display substrate, an organic electroluminescence display panel, ahigh-precision metal mask and a display device are provided in thepresent disclosure, so as to improve a resolution of the display device.

In order to solve the above technical problem, the present disclosure isimplemented as follows.

In a first aspect, a display substrate is provided, including aplurality of first sub-pixels, a plurality of second sub-pixels and aplurality of third sub-pixels. In a first direction, the firstsub-pixels and the third sub-pixels are arranged alternately to form aplurality of first sub-pixel rows, the second sub-pixels form aplurality of second sub-pixel rows, the first sub-pixel rows and thesecond sub-pixel rows are arranged alternately in a second direction,connection lines of center points of two first sub-pixels and two thirdsub-pixels arranged in two adjacent rows and two adjacent columns form afirst virtual quadrilateral, the two first sub-pixels are located at twovertex angles of the first virtual quadrilateral which are opposite toeach other, one second sub-pixel is located within the first virtualquadrilateral, the first virtual quadrilateral includes two interiorangles each being equal to 90° and two interior angles each being notequal to 90°, and the two interior angles each being not equal to 90°include a first interior angle and a second interior angle. In a samefirst virtual quadrilateral, a distance between a center point of afirst sub-pixel located at the first interior angle and a center pointof a third sub-pixel located at the second interior angle on a firststraight line is x, the first straight line is perpendicular to a commonside of the two interior angles each being equal to 90°, a value rangeof the first interior angle a is (h−10°, h+10°), and h is calculatedthrough one of the following formulas

${h = {{90^{\circ}} - {\arctan\left( \frac{x}{P} \right)}}};$${h = {{90^{\circ}} + {\arctan\left( \frac{x}{P} \right)}}};$

where P is a distance between center points of two adjacent secondsub-pixels in each second sub-pixel row.

In some embodiments, x ranges from 1 μm to 10 μm.

In some embodiments, the first interior angle a is larger than or equalto 70° and smaller than 90°.

In some embodiments, a connection line of center points of two adjacentfirst sub-pixels in the first direction is parallel to the firstdirection, a connection line of center points of two adjacent thirdsub-pixels in the first direction is parallel to the first direction,and a connection line of center points of the first sub-pixel and thethird sub-pixel adjacent to each other in the second direction isparallel to the second direction.

In some embodiments, a distance between the two adjacent firstsub-pixels in the first direction is equal to a distance between twoadjacent first sub-pixels in the second direction; and/or a distancebetween the two adjacent third sub-pixels in the first direction isequal to a distance between two adjacent third sub-pixels in the seconddirection.

In some embodiments, the first direction is approximately perpendicularto the second direction, the first direction is one of a row directionand a column direction, and the second direction is the other of the rowdirection and the column direction.

In some embodiments, four first virtual quadrilaterals arranged in twocolumns and two rows form a second virtual polygon with shared sides,the second virtual polygon includes four second sub-pixels, five firstsub-pixels and four third sub-pixels, the four second sub-pixels arelocated within the four first virtual quadrilaterals respectively, oneof the five first sub-pixels is surrounded by the other four firstsub-pixels, the other four first sub-pixels and the four thirdsub-pixels are located on sides or vertex angles of the second virtualpolygon respectively, and along the sides of the second virtual polygonin both a clockwise sequence and a counterclockwise sequence, the otherfour first sub-pixels and the four third sub-pixels located on the sidesor vertex angles of the second virtual polygon respectively are arrangedalternately. Or, the second virtual polygon includes four secondsub-pixels, five third sub-pixels and four first sub-pixels, the foursecond sub-pixels are located within the four first virtualquadrilaterals respectively, one of the five third sub-pixels issurrounded by the other four third sub-pixels, the other four thirdsub-pixels and the four first sub-pixels are located on sides or vertexangles of the second virtual polygon respectively, and along the sidesof the second virtual polygon in both a clockwise sequence and acounterclockwise sequence, the other four third sub-pixels and the fourfirst sub-pixels located on the sides or vertex angles of the secondvirtual polygon respectively are arranged alternately.

In some embodiments, a center point of the first sub-pixel surrounded bythe other four first sub-pixels does not coincide with a center point ofa quadrilateral formed by the other four first sub-pixels, a centerpoint of the third sub-pixel surrounded by the other four thirdsub-pixels does not coincide with a center point of a quadrilateralformed by the other four third sub-pixels.

In some embodiments, the display substrate further includes a pluralityof pixel repetition units, each pixel repetition unit includes two firstsub-pixels and two third sub-pixels located in the same first virtualquadrilateral, and four second sub-pixels located in a same secondvirtual polygon as one of the two first sub-pixels and surrounding theone of the two first sub-pixels.

In some embodiments, the second virtual polygon is a rectangle.

In some embodiments, a connection line of center points of at least partof the second sub-pixels arranged in the first direction isapproximately parallel to the first direction, and a connection line ofcenter points of at least part of the second sub-pixels arranged in thesecond direction is approximately parallel to the second direction.

In some embodiments, each of the second sub-pixels has a same shape anda same area.

In some embodiments, in at least one first virtual quadrilateral, adistance between the second sub-pixel and one of the two thirdsub-pixels is L1, a distance between the second sub-pixel and the otherof the two third sub-pixels is L2, and a distance between the secondsub-pixel and each of the two first sub-pixels is L1. Or, in at leastone first virtual quadrilateral, a distance between the second sub-pixeland each of the two third sub-pixels and a distance between the secondsub-pixel and each of the two first sub-pixels is L1. Or, in at leastone first virtual quadrilateral, a distance between the second sub-pixeland each of the two third sub-pixels is L1, a distance between thesecond sub-pixel and one of the two first sub-pixels is L1, and adistance between the second sub-pixel and the other of the two firstsub-pixels is L2. Or, in at least one first virtual quadrilateral, adistance between the second sub-pixel and each of the two thirdsub-pixels is L2, and a distance between the second sub-pixel and eachof the two first sub-pixels is L1; where L2 is larger than L1, and aspacing between sub-pixels is a minimum distance between sides of thesub-pixels.

In some embodiments, in at least one first virtual quadrilateral, acenter point of the second sub-pixel does not coincide with a centerpoint of the first virtual quadrilateral.

In some embodiments, an angle between a connection line of two adjacentsecond sub-pixels in the second direction and the second direction islarger than or equal to 0° and smaller than 90°.

In some embodiments, two adjacent first virtual quadrilaterals in thesecond direction include a first virtual quadrilateral A and a firstvirtual quadrilateral B. In the first virtual quadrilateral A, adistance between a center point of the second sub-pixel and a centerpoint of the first sub-pixel adjacent to the second sub-pixel is R1, anda distance between the center point of the second sub-pixel and a centerpoint of the third sub-pixel adjacent to the second sub-pixel is R3. Inthe first virtual quadrilateral B, a distance between a center point ofthe second sub-pixel and a center point of the first sub-pixel adjacentto the second sub-pixel is R2, and a distance between the center pointof the second sub-pixel and a center point of the third sub-pixeladjacent to the second sub-pixel is R4. R1 is not equal to R2, and/or,R3 is not equal to R4.

In some embodiments, two adjacent first virtual quadrilaterals in thesecond direction include a first virtual quadrilateral A and a firstvirtual quadrilateral B, the first virtual quadrilateral A includes afirst side and a third side that are parallel to the second direction,the first virtual quadrilateral B includes a second side and a fourthside that are parallel to the second direction, the first side and thesecond side are on a same straight line, the third side and the fourthside are on a same straight line, a length of the first side is smallerthan a length of the second side, a length of the fourth side is smallerthan a length of the third side, the length of the first side is equalto the length of the fourth side, and the length of the second side isequal to the length of the third side.

In some embodiments, two adjacent first virtual quadrilaterals in thesecond direction include a first virtual quadrilateral A and a firstvirtual quadrilateral B. In the first virtual quadrilateral A, adistance between the second sub-pixel and each of the two firstsub-pixels is L3, and a distance between the second sub-pixel and eachof the two third sub-pixels is L4. In the first virtual quadrilateral B,a distance between the second sub-pixel and each of the two firstsub-pixels is L3, and a distance between the second sub-pixel and eachof the two third sub-pixels is L4. A spacing between sub-pixels is aminimum distance between sides of the sub-pixels.

In some embodiments, a center point of the first sub-pixel and a centerpoint of the third sub-pixel in an nth first sub-pixel row are locatedon a same straight line, and a center point of the first sub-pixel and acenter point of the third sub-pixel in an (n+1)th first sub-pixel roware not located on a same straight line.

In some embodiments, in the (n+1)th first sub-pixel row, center pointsof all the first sub-pixels are located on a second straight line,center points of all the third sub-pixels are located on a thirdstraight line, and the second straight line and the third straight lineare different straight lines.

In some embodiments, in the second direction perpendicular to the firstdirection, a center point of the first sub-pixel and a center point ofthe third sub-pixel in a same sub-pixel column as the first sub-pixelare located on a same straight line.

In some embodiments, each of the first sub-pixels has a same shape and asame area, and each of the third sub-pixels has a same shape and a samearea.

In some embodiments, an area of one first sub-pixel is S, an area of onesecond sub-pixel is f*S, and an area of one third sub-pixel is g*S,where 0.5≤f≤0.8, and 1≤g≤2.2.

In some embodiments, a shape of each of the first sub-pixels, the secondsub-pixels and the third sub-pixels includes any one of a polygon, acircle or an ellipse.

In some embodiments, a shape of each of the first sub-pixels, the secondsub-pixels and the third sub-pixels is any one of a quadrilateral, apentagon, a hexagon, an octagon, a quadrilateral having a roundedcorner, a hexagon having a rounded corner, an octagon having a roundedcorner, a circle or an ellipse.

In some embodiments, the first sub-pixels are each a red sub-pixel, thethird sub-pixels are each a blue sub-pixel, and the second sub-pixelsare each a green sub-pixel; or, the first sub-pixels are each a bluesub-pixel, the third sub-pixels are each a red sub-pixel, and the secondsub-pixels are each a green sub-pixel; or, the first sub-pixels are eacha green sub-pixel, the third sub-pixels are each a red sub-pixel, andthe second sub-pixels are each a blue sub-pixel; or, the firstsub-pixels are each green sub-pixel, and the third sub-pixels are each ablue sub-pixel, and the second sub-pixels are each a blue sub-pixel.

An organic electroluminescence display panel is further provided,including the above-mentioned display substrate.

In some embodiments, the organic electroluminescence display panelfurther includes a pixel definition layer. The pixel definition layerincludes a plurality of pixel definition layer openings, each of thefirst sub-pixels, the second sub-pixels and the third sub-pixelscorresponds to one pixel definition layer opening, and each of the firstsub-pixels, the second sub-pixels and the third sub-pixels has anapproximately same shape as the corresponding pixel definition layeropening.

In some embodiments, each first sub-pixel includes multiple film layers,and the multiple film layers of the first sub-pixel at least partiallycover a region outside the corresponding pixel definition layer opening;and/or, each second sub-pixel includes multiple film layers, and themultiple film layers of the second sub-pixel at least partially cover aregion outside the corresponding pixel definition layer opening; and/or,each third sub-pixel includes multiple film layers, and the multiplefilm layers of the third sub-pixel at least partially cover a regionoutside the corresponding pixel definition layer opening.

A display device is further provided, including the above-mentionedorganic electroluminescence display panel.

A high-precision metal mask for manufacturing the above-mentioneddisplay substrate is further provided, including: a plurality of openingregions. The plurality of opening regions include a first opening regioncorresponding to a position of each first sub-pixel, a second openingregion corresponding to a position of each second sub-pixel, and a thirdopening region corresponding to a position of each third sub-pixel.

In some embodiments, each first sub-pixel includes multiple film layers,each second sub-pixel includes multiple film layers, each thirdsub-pixel includes multiple film layers, a shape and an arrangement ofthe first opening region are approximately the same with a shape and anarrangement of at least one film layer in the first sub-pixelrespectively, a shape and an arrangement of the third opening region areapproximately the same with a shape and an arrangement of at least onefilm layer in the third sub-pixel respectively, and a shape and anarrangement of the second opening region are approximately the same witha shape and an arrangement of at least one film layer in the secondsub-pixel respectively.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a sectional view of a display substrate according to theembodiments of the present disclosure; and

FIGS. 2 to 9 are schematic diagrams of the display substrate accordingto the embodiments of the present disclosure.

DETAILED DESCRIPTION

In order to make the technical problems to be solved, the technicalsolutions and the advantages of the embodiments of the presentdisclosure more apparent, a detailed description will be given belowwith reference with the drawings and specific embodiments.

A display substrate, an organic electroluminescence display panel, ahigh-precision metal mask and a display device are provided in theembodiments of the present disclosure, so as to improve a resolution ofthe display device.

The display substrate is provided, including a plurality of firstsub-pixels, a plurality of second sub-pixels and a plurality of thirdsub-pixels. In a first direction, the first sub-pixels and the thirdsub-pixels are arranged alternately to form a plurality of firstsub-pixel rows, the second sub-pixels form a plurality of secondsub-pixel rows, the first sub-pixel rows and the second sub-pixel rowsare arranged alternately in a second direction, connection lines ofcenter points of two first sub-pixels and two third sub-pixels arrangedin two adjacent rows and two adjacent columns form a first virtualquadrilateral, the two first sub-pixels are located at two vertex anglesof the first virtual quadrilateral which are opposite to each other, onesecond sub-pixel is located within the first virtual quadrilateral, thefirst virtual quadrilateral includes two interior angles each beingequal to 90° and two interior angles each being not equal to 90°, andthe two interior angles each being not equal to 90° include a firstinterior angle and a second interior angle. In a same first virtualquadrilateral, a distance between a center point of a first sub-pixellocated at the first interior angle and a center point of a thirdsub-pixel located at the second interior angle on a first straight lineis x, the first straight line is perpendicular to a common side of thetwo interior angles each being equal to 90°, a value range of the firstinterior angle a is (h−10°, h+10°), and h is calculated through one ofthe following formulas

${h = {{90^{\circ}} - {\arctan\left( \frac{x}{P} \right)}}};$${h = {{90^{\circ}} + {\arctan\left( \frac{x}{P} \right)}}};$

where P is a distance between center points of two adjacent secondsub-pixels in each second sub-pixel row.

Each formula is in an approximately equal relationship, that is, thevalue of the first interior angle a may have a certain offset. Forexample, the value of the first interior angle a may range from acalculation result h minus 10° to the calculation result h plus 10°, orrange from the calculation result h minus 5° to the calculation result hplus 5°.

P is the distance between the center points of the two adjacent secondsub-pixels in each second sub-pixel row. The second sub-pixels in thesecond sub-pixel row may be distributed evenly, that is, distancesbetween every two adjacent second sub-pixels are approximately the same,or a certain offset, e.g., which is smaller than Sum, may exist betweenthe distances. P may also be an average distance of distances betweenadjacent second sub-pixels in a same sub-pixel row. In addition, P isalso approximately the same with a distance between the center point ofthe first sub-pixel and the center point of the third sub-pixel adjacentto the first sub-pixel in a same row. For example, an offset between Pand the distance between the center point of the first sub-pixel and thecenter point of the third sub-pixel adjacent to the first sub-pixel inthe same row is smaller than Sum. Or, P is half a distance betweencenter points of two adjacent first sub-pixels in a same sub-pixel row,or P is half a distance between center points of two adjacent thirdsub-pixels in a same sub-pixel row.

In the above scheme, as compared with a conventional display substrate,the first sub-pixels, the second sub-pixels and the third sub-pixels maybe arranged closely under a same process condition in the displaysubstrate of the embodiment of the present disclosure, so as to improvea resolution of the display device when meeting a condition of a minimumpixel spacing. In addition, the second sub-pixels are arranged in astaggered manner with respect to the first sub-pixels and the thirdsub-pixels. Thus, a distance between openings on a fine metal mask formanufacturing the second sub-pixels is increased under a same apertureratio, so as to increase a margin when manufacturing the fine metalmask, thereby to achieve a higher resolution. In addition, the firstsub-pixels, the second sub-pixels and the third sub-pixels are arrangedin a staggered manner, so as to form a more even distribution ofbrightness center points, thereby to improve the display effect of thedisplay device.

In some embodiments, one first sub-pixel includes a first effectivelight-emitting region, one second sub-pixel includes a second effectivelight-emitting region, and one third sub-pixel includes a thirdeffective light-emitting region. An area of the second effectivelight-emitting region<an area of the first effective light-emittingregion<an area of the third effective light-emitting region. On thedisplay substrate, a sum of areas of all the third effectivelight-emitting regions included in the third sub-pixels>a sum of areasof all the second effective light-emitting regions included in thesecond sub-pixels>a sum of areas of all the first effectivelight-emitting regions included in the first sub-pixels. In someembodiments, each first effective light-emitting region, each secondeffective light-emitting region and each third effective light-emittingregion are separated from each other. In some embodiments, each firsteffective light-emitting region, each second effective light-emittingregion and each third effective light-emitting region are defined by aplurality of separated openings formed in a pixel definition layer. Insome embodiments, each first effective light-emitting region is definedby a light-emitting layer that is driven to emit light in thecorresponding first sub-pixel and locating between an anode and acathode opposite to each other in a direction perpendicular to a basesubstrate. In some embodiments, each second effective light-emittingregion is defined by a light-emitting layer that is driven to emit lightin the corresponding second sub-pixel and locating between the anode andthe cathode opposite to each other in the direction perpendicular to thebase substrate. In some embodiments, each third effective light-emittingregion is defined by a light-emitting layer that is driven to emit lightin the corresponding third sub-pixel and locating between the anode andthe cathode opposite to each other in the direction perpendicular to thebase substrate. In some embodiments, each first effective light-emittingregion, each second effective light-emitting region or each thirdeffective light-emitting region is defined by the correspondinglight-emitting layer and an electrode (the anode or cathode) or part ofthe electrode where carriers (holes or electrons) are transported in thecorresponding light-emitting layer. In some embodiments, each firsteffective light-emitting region, each second effective light-emittingregion or each third effective light-emitting region is defined by atleast part of the cathode and at least part of the anode of whichorthographic projections onto the base substrate overlap with eachother, and the orthographic projections of the at least part of thecathode and at least part of the anode onto the base substrate do notoverlap an orthographic projection of a first insulation layer onto thebase substrate. The first insulation layer is located between thecathode and the anode in the direction perpendicular to the basesubstrate. For example, the first insulation layer includes the pixeldefinition layer. In some embodiments, each first sub-pixel, each secondsub-pixel or each third sub-pixel includes a first electrode, thelight-emitting layer located on a side of the first electrode away fromthe base substrate and a second electrode located on a side of thelight-emitting layer away from the first electrode. In the directionperpendicular to the base substrate, a second insulation layer isfurther provided between the first electrode and the light-emittinglayer, and/or between the second electrode and the light-emitting layer.A projection of the second insulation layer onto the base substrateoverlaps a projection of the first electrode or the second electrodeonto the base substrate. The second insulation layer has an opening, andthe opening of the second insulation layer at a side facing thelight-emitting layer may expose at least part of the first electrode orthe second electrode, so as to enable the at least part of the firstelectrode or the second electrode to be in contact with thelight-emitting layer or a functional layer used to support the lightemitting. Each first effective light-emitting region, each secondeffective light-emitting region or each third effective light-emittingregion is defined by a part of the first electrode or the secondelectrode that is in contact with the light-emitting layer or thefunctional layer used to support the light emitting. For example, thesecond insulation layer includes the pixel definition layer. In someembodiments, the functional layer used to support the light emitting maybe any one or more of such layers as a hole injection layer, a holetransporting layer, an electron transporting layer, a hole blockinglayer, an electron blocking layer, an electron injection layer, anauxiliary light-emitting layer, an interface improvement layer and ananti-reflection layer. In some embodiments, the first electrode may bethe anode and the second electrode may be the cathode. In someembodiments, the first electrode may include at least two stacked layersmade of indium tin oxide (ITO) and Ag respectively. For example, thefirst electrode may include three stacked layers made of ITO, Ag, andITO respectively. In some embodiments, the second electrode may includeany one or more of Mg, Ag, ITO, and indium zinc oxide (IZO). Forexample, the second electrode may be a mixed layer or an alloy layer ofMg and Ag.

Each sub-pixel includes the light-emitting layer, each first sub-pixelincludes a first-color light-emitting layer located within the openingand on the pixel definition layer, each second sub-pixel includes asecond-color light-emitting layer located within the opening and on thepixel definition layer, and each third sub-pixel includes a third-colorlight-emitting layer located within the opening and on the pixeldefinition layer.

In some exemplary embodiments, a manufacturing process of the displaysubstrate in the embodiment may include the following steps (1) to (8).The exemplary embodiment is described by taking a flexible displaysubstrate having a top-emission structure (shown in FIG. 1) as anexample.

(1) Forming a Base Substrate on a Glass Support Plate

In some exemplary embodiments, the base substrate 10 may be a flexiblebase substrate, e.g., including a first flexible material layer, a firstinorganic material layer, a semiconductor layer, a second flexiblematerial layer and a second inorganic material layer laminated oneanother on the glass support plate 1. The first flexible material layerand the second flexible material layer are each made of such a materialas polyimide (PI), polyethylene terephthalate (PET) or surface-treatedpolymer soft film. The first inorganic material layer and the secondinorganic material layer are each made of such a material as siliconnitride (SiNx) or silicon oxide (SiOx), so as to improve a capability ofpreventing oxygen and moisture from entering the base substrate. Thefirst inorganic material layer and the second inorganic material layerare also called barrier layers. The semiconductor layer is made ofamorphous silicon (a-si). In some exemplary embodiments, taking alaminated structure of PI1/Barrier1/a-si/PI2/Barrier2 as an example, thedisplay substrate may be manufactured as follows. First, polyimide isapplied onto the glass support plate 1 and cured to form a firstflexible (PI1) layer. Next, a barrier thin film is deposited on thefirst flexible layer to form a first barrier (Barrier1) layer coveringthe first flexible layer, an amorphous thin film is deposited on thefirst barrier layer to form an amorphous silicon (a-si) layer coveringthe first barrier layer, and polyimide is applied onto the amorphoussilicon layer and cured to form a second flexible (PI2) layer. Then, abarrier thin film is deposited on the second flexible layer to form asecond barrier (Barrier2) layer covering the second flexible layer.Finally, the manufacturing of the base substrate 10 is finished.

(2) Manufacturing a Driving Structure Layer on the Base Substrate

The driving structure layer includes multiple driving circuits. Eachdriving circuit includes multiple transistors and at least one storagecapacitor. For example, the driving circuit may be designed to be of a2T1C, 3T1C or 7T1C structure.

In some exemplary embodiments, the driving structure layer may bemanufactured as follows, which is described by taking a manufacturingprocess of a driving circuit of a first sub-pixel 21 as an example.

A first insulation thin film and an active layer thin film are depositedon the base substrate 10 sequentially, and the active layer thin film ispatterned through a patterning process to form a first insulation layer11 covering the entire base substrate 10 and an active layer patternarranged on the first insulation layer 11. The active layer patternincludes at least a first active layer.

Next, a second insulation thin film and a first metal thin film aredeposited sequentially, and the first metal thin film is patternedthrough a patterning process to form a second insulation layer 12covering the active layer pattern and a first gate metal layer patternarranged on the second insulation layer 12. The first gate metal layerpattern includes at least a first gate electrode and a first capacitorelectrode.

Next, a third insulation thin film and a second metal thin film aredeposited sequentially, and the second metal thin film is patternedthrough a patterning process to form a third insulation layer 13covering a first gate metal layer and a second gate metal layer patternarranged on the third insulation layer 13. The second gate metal layerpattern includes at least a second capacitor electrode of which aposition corresponds to a position of the first capacitor electrode.

Next, a fourth insulation thin film is deposited, and then patternedthrough a patterning process to form a pattern of the fourth insulationlayer 14 covering a second gate metal layer. The fourth insulation layer14 is provided with at least two first via-holes. The fourth insulationlayer 14, the third insulation layer 13 and the second insulation layer12 in the at least two first via-holes are etched off, so as to expose asurface of the first active layer.

Finally, a third metal thin film is deposited and then patterned througha patterning process to form a pattern of a source-drain metal layer onthe fourth insulation layer 14. The source-drain metal layer includes atleast a first source electrode and a first drain electrode in a displayregion. The first source electrode and the first drain electrode may beconnected to the first active layer through the first via-holesrespectively.

In the driving circuit of the first sub-pixel 21 in the display region,the first active layer, the first gate electrode, the first sourceelectrode and the first drain electrode may form a first transistor 210,and the first capacitor electrode and the second capacitor electrode mayform a first storage capacitor 212. In the above manufacturing process,a driving circuit of the second sub-pixel 22 and a driving circuit ofthe third color sub-pixel 23 may be formed simultaneously.

In some exemplary embodiments, the first insulation layer 11, the secondinsulation layer 12, the third insulation layer 13 and the fourthinsulation layer 14 are each made of any one or more of silicon oxide(SiOx), silicon nitride (SiNx) or silicon oxynitride (SiON), and eachmay be of a single layer, multi-layer or composite layer structure. Thefirst insulation layer 11 is called as a buffer layer and used toimprove a capability of preventing oxygen and moisture from entering thebase substrate. The second insulation layer 12 and the third insulationlayer 13 are each referred to as a gate insulation (GI) layer, and thefourth insulation layer 14 is referred to as an interlayer insulation(Interlayer Dielectric, ILD) layer. The first metal thin film, thesecond metal thin film and the third metal thin film are each made of ametal material, such as any one or more of Ag, Cu, Al, Ti and Mo, or analloy material thereof, such as AlNd or MoNb, and each may be of asingle-layer structure or a multi-layer composite structure, such asTi/Al/Ti. The active layer thin film may be made of any one or more ofsuch materials as amorphous indium gallium zinc oxide (a-IGZO), zincoxynitride (ZnON), indium zinc tin oxide (IZTO), amorphous silicon(a-Si), polysilicon (p-Si), hexathiophene or polythiophene. That is, thepresent disclosure is suitable for a transistor manufactured based on anoxide technology, a silicon technology and an organic technology.

(3) Forming a Planarization Layer on the Base Substrate Provided withthe Aforementioned Pattern

In some exemplary embodiments, a planarization thin film made of anorganic material is applied onto the base substrate 10 provided with theaforementioned pattern to form a planarization (PLN) layer 15 coveringthe entire base substrate 10, and then exposed with a mask and developedto form a plurality of second via-holes K2 in the planarization layer 15in the display region. During a development process, the planarizationlayer 15 in the plurality of second via-holes K2 is removed, so as toexpose a surface of the first drain electrode of the first transistor210 in the driving circuit of the first sub-pixel 21, a surface of afirst drain electrode of a first transistor in the driving circuit ofthe second sub-pixel 22 and a surface of a first drain electrode of afirst transistor in the driving circuit of the third sub-pixel 23.

(4) Forming a Pattern of the First Electrode on the Base SubstrateProvided with the Aforementioned Pattern

In some examples, the first electrode is a reflective anode.

In some exemplary embodiments, a conductive thin film is deposited onthe base substrate 10 provided with the aforementioned pattern, and thenpatterned through a patterning process to form the pattern of the firstelectrode. A first anode 213 of the first sub-pixel 21 is connected tothe first drain electrode of the first transistor 210 through the secondvia-holes K2, a second anode 223 of the second sub-pixel 22 is connectedto the first drain electrode of the first transistor of the secondsub-pixel 22 through the second via-holes K2, and a third anode 233 ofthe third sub-pixel 23 is connected to the first drain electrode of thefirst transistor of the third sub-pixel 23 through the second via-holesK2.

In some examples, the first electrode may made of a metal material, suchas any one or more of Mg, Ag, Cu, Al, Ti or Mo, or an alloy materialthereof, such as AlNd or MoNb. The first electrode may be of asingle-layer structure, a multi-layer composite structure such asTi/Al/Ti, or a stacked structure formed by a metal material and atransparent conductive material which are such reflective materials asITO/Ag/ITO or Mo/AlNd/ITO.

(5) Forming a Pattern of the Pixel Definition Layer (PDL) Layer on theBase Substrate Provided with the Aforementioned Pattern

In some exemplary embodiments, a pixel definition thin film is appliedonto the base substrate 10 provided with the aforementioned pattern, andthen exposed with a mask and developed to form the pattern of the PDLlayer. The pixel definition layer 30 in the display region includes aplurality of sub-pixel definition portions 302. A plurality of pixeldefinition layer openings 301 are formed between adjacent sub-pixeldefinition portions 302, and the pixel definition layer 30 in theplurality of pixel definition layer openings 301 is removed during adevelopment process, so as to expose at least part of a surface of thefirst anode 213 of the first sub-pixel 21, at least part of a surface ofthe second anode 223 of the second sub-pixel 22 and at least part of asurface of the third anode 233 of the third sub-pixel 23.

In some examples, the pixel definition layer 30 may be made ofpolyimide, acrylic or polyethylene terephthalate, etc.

(6) Forming a Pattern of a Post Spacer (PS) on the Base SubstrateProvided with the Aforementioned Pattern

In some exemplary embodiments, an organic material thin film is appliedonto the base substrate 10 provided with the aforementioned pattern, andthen exposed with a mask and developed to form the pattern of the PS 34.The PS 34 may be used as a supporting layer and configured to support afine metal mask (FMM) during an evaporation process. In some examples,along a row arrangement direction of the sub-pixels, a repetition unitis arranged between two adjacent PSs 34. For example, the PS 34 may belocated between the first sub-pixel 21 and the third sub-pixel 23adjacent to the first sub-pixel 21.

(7) Forming an Organic Functional Layer and the Second ElectrodeSequentially on the Base Substrate Provided with the AforementionedPattern

In some examples, the second electrode is a transparent cathode. Lightemitted by a light-emitting element may exit at a side of thetransparent cathode away from the base substrate 10, so as to achievetop emission. In some examples, the organic functional layer of thelight-emitting element includes a hole injection layer, a holetransporting layer, a light-emitting layer and an electron transportinglayer.

In some exemplary embodiments, the hole injection layer 241 and the holetransporting layer 242 are formed through vapor deposition sequentiallyusing an open mask on the base substrate 10 provided with theaforementioned pattern, and then a blue light-emitting layer 236, agreen light-emitting layer 216 and a red light-emitting layer 226 areformed sequentially through vapor deposition using a FMM. Next, theelectron transporting layer 243, the cathode 244 and an optical couplinglayer 245 are formed sequentially through vapor deposition using an openmask. All the hole injection layer 241, the hole transporting layer 242,the electron transporting layer 243 and the cathode 244 are commonlayers of multiple sub-pixels. In some examples, the organic functionallayer may further include a microcavity adjustment layer located betweenthe hole transporting layer and the light-emitting layer. For example, ablue microcavity adjustment layer, the blue light-emitting layer, agreen microcavity adjustment layer, the green light-emitting layer, ared microcavity adjustment layer and the red light-emitting layer areformed sequentially through vapor deposition using a FMM.

In some exemplary embodiments, the organic functional layer is formed ina sub-pixel region, so as to enable the organic functional layer to beconnected to the anode. The cathode is formed on the pixel definitionlayer and connected to the organic functional layer.

In some exemplary embodiments, the cathode may be made of any one ormore of Mg, Ag, Al, or an alloy thereof, or be made of a transparentconductive material, such as ITO, or be of a multi-layer compositestructure made of metal and transparent conductive materials.

In some exemplary embodiments, the optical coupling layer may be formedon a side of the cathode 244 away from the base substrate 10, and be acommon layer of the multiple sub-pixels. The optical coupling layer maycooperate with the transparent cathode to output more light. Forexample, the optical coupling layer may be, but not limited to, made ofa semiconductor material.

(8) Forming an Encapsulation Layer on the Base Substrate Provided withthe Aforementioned Pattern

In some exemplary embodiments, the encapsulation layer is formed on thebase substrate 10 provided with the aforementioned pattern, and mayinclude a first encapsulation layer 41, a second encapsulation layer 42and a third encapsulation layer 43 laminated one another. The firstencapsulation layer 41 is made of an inorganic material and covers thecathode 244 in the display region. The second encapsulation layer 42 ismade of an organic material. The third encapsulation layer 43 is made ofan inorganic material and covers the first encapsulation layer 41 andthe second encapsulation layer 42. However, the embodiment is notlimited thereto. In some examples, the encapsulation layer may be of afive-layer structure including one inorganic material layer, one organicmaterial layer, one inorganic material layer, one organic material layerand one inorganic material layer arranged sequentially.

In some embodiments, x ranges from 1 μm to 10 μm. Further, x ranges from2 μm to 7 μm, or x ranges from 2 μm to 8 μm. For example, x may be 2 μm,3 μm, 4 μm, 5 μm, 6 μm, 7 μm or 8 μm.

In some embodiments, the first interior angle a is larger than or equalto 70° and smaller than 90°. Further, the first interior angle a islarger than or equal to 75° and smaller than 90°. For example, a valueof the first interior angle a may be 86°, 82°, 83°, 84° or 85°.

In some embodiments, a connection line of center points of two adjacentfirst sub-pixels in the first direction is parallel to the firstdirection, a connection line of center points of two adjacent thirdsub-pixels in the first direction is parallel to the first direction,and a connection line of center points of the first sub-pixel and thethird sub-pixel adjacent to each other in the second direction isparallel to the second direction.

In some embodiments, a distance between the two adjacent firstsub-pixels in the first direction is equal to a distance between twoadjacent first sub-pixels in the second direction; and/or a distancebetween the two adjacent third sub-pixels in the first direction isequal to a distance between two adjacent third sub-pixels in the seconddirection.

That is, connection lines of center points of the four first sub-pixelsarranged in two rows and two columns form a virtual square, andconnection lines of center points of the four third sub-pixels arrangedin two rows and two columns form a virtual square. In this way, thefirst sub-pixels and the third sub-pixels are distributed evenly, so asto form the more even distribution of brightness center points, andimprove the display effect of the display device.

In some embodiments, the first direction is approximately perpendicularto the second direction, the first direction is one of a row directionand a column direction, and the second direction is the other of the rowdirection and the column direction.

In some embodiments, four first virtual quadrilaterals arranged in twocolumns and two rows form a second virtual polygon with shared sides,the second virtual polygon includes four second sub-pixels, five firstsub-pixels and four third sub-pixels, the four second sub-pixels arelocated within the four first virtual quadrilaterals respectively, oneof the five first sub-pixels is surrounded by the other four firstsub-pixels, the other four first sub-pixels and the four thirdsub-pixels are located on sides or vertex angles of the second virtualpolygon respectively, and along the sides of the second virtual polygonin both a clockwise sequence and a counterclockwise sequence, the otherfour first sub-pixels and the four third sub-pixels located on the sidesor vertex angles of the second virtual polygon respectively are arrangedalternately. Or, the second virtual polygon includes four secondsub-pixels, five third sub-pixels and four first sub-pixels, the foursecond sub-pixels are located within the four first virtualquadrilaterals respectively, one of the five third sub-pixels issurrounded by the other four third sub-pixels, the other four thirdsub-pixels and the four first sub-pixels are located on sides or vertexangles of the second virtual polygon respectively, and along the sidesof the second virtual polygon in both a clockwise sequence and acounterclockwise sequence, the other four third sub-pixels and the fourfirst sub-pixels located on the sides or vertex angles of the secondvirtual polygon respectively are arranged alternately.

Connection lines of the other four first sub-pixels located on the sidesor vertex angles of the second virtual polygon form approximately avirtual parallelogram, and/or, connection lines of the four thirdsub-pixels located on the sides or vertex angles of the second virtualpolygon form approximately a virtual parallelogram, and/or, connectionlines of the four second sub-pixels located within the four firstvirtual quadrilaterals form approximately a virtual parallelogram.

In some embodiments, the connection lines of the other four firstsub-pixels located on the sides or vertex angles of the second virtualpolygon form approximately a virtual rectangle or a virtual square, theconnection lines of the four third sub-pixels located on the sides orvertex angles of the second virtual polygon form approximately a virtualrectangle or a virtual square, and the connection lines of the foursecond sub-pixels located within the four first virtual quadrilateralsform approximately a virtual rectangle.

The first virtual quadrilaterals form a second virtual polygon withshared sides, that is, two adjacent first virtual quadrilaterals in therow direction share one side in the column direction, and two adjacentfirst virtual quadrilaterals in the column direction share one side inthe row direction.

In some embodiments, a center point of the first sub-pixel surrounded bythe other four first sub-pixels does not coincide with a center point ofa quadrilateral formed by the other four first sub-pixels, a centerpoint of the third sub-pixel surrounded by the other four thirdsub-pixels does not coincide with a center point of a quadrilateralformed by the other four third sub-pixels.

In some embodiments, the four first virtual quadrilaterals of a samesecond virtual polygon include a first virtual quadrilateral T1 and asecond virtual polygon T2. A width-to-length ratio of the secondsub-pixel in the first virtual quadrilateral T1 is larger than awidth-to-length ratio of the second sub-pixel in the first virtualquadrilateral T2.

A length of the second sub-pixel may be a largest size of the secondsub-pixel in a length direction of the second sub-pixel, and a width ofthe second sub-pixel may be a largest size of the second sub-pixel in awidth direction of the second sub-pixel.

Or, the second sub-pixel includes two symmetry axes perpendicular toeach other, and the width-to-length ratio of the second sub-pixel is aratio of a smaller size to a larger size on the two symmetry axes.

In some embodiments, the display substrate further includes a pluralityof pixel repetition units, each pixel repetition unit includes two firstsub-pixels and two third sub-pixels located in the same first virtualquadrilateral, and four second sub-pixels located in a same secondvirtual polygon as one of the two first sub-pixels and surrounding theone of the two first sub-pixels.

In addition, a structure of each pixel repetition unit located in aperipheral region of the display substrate may be different from astructure of each pixel repetition unit located in a central region ofthe display substrate. That is because the pixel repetition unit locatedin the peripheral region of the display substrate may have fewersub-pixels.

In some embodiments, the second virtual polygon is a rectangle.

In some embodiments, a connection line of center points of at least partof the second sub-pixels arranged in the first direction isapproximately parallel to the first direction, and a connection line ofcenter points of at least part of the second sub-pixels arranged in thesecond direction is approximately parallel to the second direction.

In some embodiments, some of the second sub-pixels have different shapesand/or areas. For example, some second sub-pixels each has a shapedifferent from the other second sub-pixels, or some second sub-pixelseach has an area different from the other second sub-pixels, or somesecond sub-pixels each has a shape and an area different from the othersecond sub-pixels.

In some embodiments, each of the second sub-pixels may have a same shapeand a same area.

In some embodiments, in at least one first virtual quadrilateral, adistance between the second sub-pixel and one of the two thirdsub-pixels is L1, a distance between the second sub-pixel and the otherof the two third sub-pixels is L2, and a distance between the secondsub-pixel and each of the two first sub-pixels is L1. Or, in at leastone first virtual quadrilateral, a distance between the second sub-pixeland each of the two third sub-pixels and a distance between the secondsub-pixel and each of the two first sub-pixels are L1. Or, in at leastone first virtual quadrilateral, a distance between the second sub-pixeland each of the two third sub-pixels is L1, a distance between thesecond sub-pixel and one of the two first sub-pixels is L1, a distancebetween the second sub-pixel and the other of the two first sub-pixelsis L2. Or, in at least one first virtual quadrilateral, a distancebetween the second sub-pixel and each of the two third sub-pixels is L2,and a distance between the second sub-pixel and each of the two firstsub-pixels is L1; where L2 is larger than L1, and a spacing betweensub-pixels is a minimum distance between sides of the sub-pixels.

In some embodiments, along a counterclockwise direction, the four secondsub-pixels in the second virtual quadrilateral are a second sub-pixel A,a second sub-pixel B, a second sub-pixel C and a second sub-pixel D,respectively. The second sub-pixel A, the second sub-pixel B, the secondsub-pixel C and the second sub-pixel D each has a same shape. Or, thesecond sub-pixel A has a same shape as the second sub-pixel B, thesecond sub-pixel C has a same shape as the second sub-pixel D, and thesecond sub-pixel A has a different shape from the second sub-pixel C.Or, the second sub-pixel A has a same shape as the second sub-pixel D,the second sub-pixel C has a same shape as the second sub-pixel B, andthe second sub-pixel A has a different shape from the second sub-pixelC. Or, the second sub-pixel A has a same shape as the second sub-pixelC, a shape of the second sub-pixel A, a shape of the second sub-pixel Band a shape of the second sub-pixel D are different from each other. Or,the shape of the second sub-pixel A, the shape of the second sub-pixelB, a shape of the second sub-pixel C and the shape of the secondsub-pixel D are different from each other.

In some embodiments, in at least one first virtual quadrilateral, acenter point of the second sub-pixel does not coincide with a centerpoint of the first virtual quadrilateral.

In some embodiments, an angle between a connection line of two adjacentsecond sub-pixels in the second direction and the second direction islarger than or equal to 0° and smaller than 90°.

In some embodiments, a center point of the first sub-pixel and a centerpoint of the third sub-pixel in an nth first sub-pixel row are locatedon a same straight line, and a center point of the first sub-pixel and acenter point of the third sub-pixel in an (n+1)th first sub-pixel roware not located on a same straight line.

In some embodiments, in the (n+1)th first sub-pixel row, center pointsof all the first sub-pixels are located on a second straight line,center points of all the third sub-pixels are located on a thirdstraight line, and the second straight line and the third straight lineare different straight lines.

In some embodiments, in the second direction perpendicular to the firstdirection, a center point of the first sub-pixel and a center point ofthe third sub-pixel in a same sub-pixel column as the first sub-pixelare located on a same straight line.

In some embodiments, two adjacent first virtual quadrilaterals in thesecond direction include a first virtual quadrilateral A and a firstvirtual quadrilateral B. In the first virtual quadrilateral A, adistance between a center point of the second sub-pixel and a centerpoint of the first sub-pixel adjacent to the second sub-pixel is R1, anda distance between the center point of the second sub-pixel and a centerpoint of the third sub-pixel adjacent to the second sub-pixel is R3. Inthe first virtual quadrilateral B, a distance between a center point ofthe second sub-pixel and a center point of the first sub-pixel adjacentto the second sub-pixel is R2, and a distance between the center pointof the second sub-pixel and a center point of the third sub-pixeladjacent to the second sub-pixel is R4. R1 is not equal to R2, and/or,R3 is not equal to R4.

In some embodiments, two adjacent first virtual quadrilaterals in thesecond direction include a first virtual quadrilateral A and a firstvirtual quadrilateral B, the first virtual quadrilateral A includes afirst side and a third side that are parallel to the second direction,the first virtual quadrilateral B includes a second side and a fourthside that are parallel to the second direction, the first side and thesecond side are on a same straight line, the third side and the fourthside are on a same straight line, a length of the first side is smallerthan a length of the second side, a length of the fourth side is smallerthan a length of the third side, the length of the first side is equalto the length of the fourth side, and the length of the second side isequal to the length of the third side.

In some embodiments, two adjacent first virtual quadrilaterals in thesecond direction include a first virtual quadrilateral A and a firstvirtual quadrilateral B. In the first virtual quadrilateral A, adistance between the second sub-pixel and each of the two firstsub-pixels is L3, and a distance between the second sub-pixel and eachof the two third sub-pixels is L4. In the first virtual quadrilateral B,a distance between the second sub-pixel and each of the two firstsub-pixels is L3, and a distance between the second sub-pixel and eachof the two third sub-pixels is L4. A spacing between sub-pixels is aminimum distance between sides of the sub-pixels.

Optionally, in the display substrate of the embodiment of the presentdisclosure, the first sub-pixels are each a red sub-pixel, the thirdsub-pixels are each a blue sub-pixel, and the second sub-pixels are eacha green sub-pixel. Or, the first sub-pixels are each a blue sub-pixel,the third sub-pixels are each a red sub-pixel, and the second sub-pixelsare each a green sub-pixel. In this way, the green sub-pixel located inthe first virtual quadrilateral may form a light-emitting pixel pointwith the red sub-pixel and the blue sub-pixel located at any twoadjacent vertex angles of the first virtual quadrilateral.

In some embodiments, the first sub-pixels may each be a green sub-pixel,the third sub-pixels may each be a red sub-pixel, and the secondsub-pixels may each be a blue sub-pixel. Or, the first sub-pixels mayeach be green sub-pixel, the third sub-pixels may each be a bluesub-pixel, and the second sub-pixels may each be a blue sub-pixel.

Optionally, in the display substrate of the embodiment of the presentdisclosure, each of the first sub-pixels has a same area, so as toensure that, in any light-emitting pixel point composed of the firstsub-pixel, the second sub-pixel and the third sub-pixel, the firstsub-pixel has a same light-emitting area.

Of course, during a specific implementation, in the display substrate ofthe embodiment of the present disclosure, an area of each of at leasttwo first sub-pixels may be different from the other first sub-pixels,which will not be particularly defined herein.

Optionally, in the display substrate of the embodiment of the presentdisclosure, each of the second sub-pixels has a same area, so as toensure that, in any light-emitting pixel point composed of the firstsub-pixel, the second sub-pixel and the third sub-pixel, the secondsub-pixel has a same light-emitting area.

Of course, during a specific implementation, in the display substrate ofthe embodiment of the present disclosure, an area of each of at leasttwo second sub-pixels may be different from the other second sub-pixels,which will not be particularly defined herein.

Optionally, in the display substrate of the embodiment of the presentdisclosure, each of the third sub-pixels has a same area, so as toensure that, in any light-emitting pixel point composed of the firstsub-pixel, the second sub-pixel and the third sub-pixel, the thirdsub-pixel has a same light-emitting area.

Of course, during a specific implementation, in the display substrate ofthe embodiment of the present disclosure, an area of each of at leastthird second sub-pixels may be different from the other thirdsub-pixels, which will not be particularly defined herein.

In some embodiments, an area of one first sub-pixel is S, an area of onesecond sub-pixel is PS, and an area of one third sub-pixel is g*S, where0.5≤f≤0.8, and 1≤g≤2.2. In this way, brightness center points oflight-emitting pixel points each composed of the first sub-pixel, thesecond sub-pixel and the third sub-pixel may be distributed more evenly,so as to improve the display effect.

Further, since a luminous efficiency of the blue sub-pixel is relativelylow and a life span thereof is short, optionally, in the displaysubstrate of the embodiment of the present disclosure, an area of theblue sub-pixel may be designed to be larger than an area of the redsub-pixel and an area of the green sub-pixel.

Further, in the display substrate of the embodiment of the presentdisclosure, since a luminous efficiency of the green sub-pixel isgenerally high, the area of the green sub-pixel may be designed to besmaller than the area of the red sub-pixel. Of course, during a specificimplementation, the area of the green sub-pixel may be the same with thearea of the red sub-pixel, which will not be particularly definedherein.

In order to ensure that mask patterns may be consistent for a same typeof pixels during manufacturing, thereby to simplify a patterningprocess, optionally, in the display substrate of the embodiment of thepresent disclosure, the first sub-pixels each has an approximately sameshape.

Of course, during a specific implementation, in the display substrate ofthe embodiment of the present disclosure, at least two first sub-pixelseach has a different shape from the other first sub-pixels, which willnot be particularly defined herein.

In order to ensure that mask patterns may be consistent for a same typeof pixels during manufacturing, thereby to simplify a patterningprocess, optionally, in the display substrate of the embodiment of thepresent disclosure, the second sub-pixels each has an approximately sameshape.

Of course, during a specific implementation, in the display substrate ofthe embodiment of the present disclosure, at least two second sub-pixelseach has a different shape from the other second sub-pixels, which willnot be particularly defined herein.

In addition, optionally, in a second virtual parallelogram of thedisplay substrate of the embodiment of the present disclosure, in thecase that patterns of four second sub-pixel are the same or similar,arrangement angles thereof may be the same or different, which will notbe particularly defined herein.

In order to ensure that mask patterns may be consistent for a same typeof pixels during manufacturing, thereby to simplify a patterningprocess, optionally, in the display substrate of the embodiment of thepresent disclosure, the third sub-pixels each has an approximately sameshape.

Of course, during a specific implementation, in the display substrate ofthe embodiment of the present disclosure, at least two third sub-pixelseach has a different shape from the other third sub-pixels, which willnot be particularly defined herein.

Optionally, specific shapes of the second sub-pixel, the first sub-pixeland the third sub-pixel, a positional relationship, a parallel andangular relationship among the second sub-pixel, the first sub-pixel andthe third sub-pixel may be designed as required. In a practical process,due to limitations of process conditions or other factors, there may besome deviations. Therefore, the shapes and positions of the secondsub-pixel, the first sub-pixel and the third sub-pixel and a relativepositional relationship among the second sub-pixel, the first sub-pixeland the third sub-pixel may meet the above conditions approximately,which are also included in the display substrate of the embodiment ofthe present disclosure.

It should be appreciated that, when the patterns of the sub-pixels areinconsistent in the embodiments of the present disclosure, it means thatshapes of the sub-pixels are different. For example, one sub-pixel is ofa circular shape and the other sub-pixel is of a rectangular shape.Similarly, when the patterns of the sub-pixels are consistent in theembodiments of the present disclosure, it means that the shapes of thesub-pixels are the same or similar. For example, two sub-pixels are eachof a triangular shape, and shapes of the two sub-pixels are consideredto be consistent regardless of whether areas thereof are equal to eachother.

In some embodiments, a shape of each of the first sub-pixels, the secondsub-pixels and the third sub-pixels includes any one of a polygon, acircle or an ellipse.

In some embodiments, a shape of each of the first sub-pixels, the secondsub-pixels and the third sub-pixels is any one of a quadrilateral, apentagon, a hexagon, an octagon, a quadrilateral having a roundedcorner, a hexagon having a rounded corner, an octagon having a roundedcorner, a circle or an ellipse.

It should be appreciated that, in the display substrate of theembodiment of the present disclosure, when the sub-pixel is located atone position, it means that there is an overlapping region between thesub-pixel and a range of the one position where the sub-pixel islocated. During a specific implementation, a center point of thesub-pixel may overlap the one position. Of course, the center point ofthe sub-pixel may not overlap the one position, that is, there is anoffset between the center point of the sub-pixel and the one position,which will not be particularly defined herein. In addition, the centerpoint of the sub-pixel may be a geometric center point of a sub-pixelpattern, or a center point of a light-emitting color of the sub-pixel,which will not be particularly defined herein.

Optionally, in the display substrate of the embodiment of the presentdisclosure, in order to ensure that the sub-pixels may be evenlydistributed, the center point of each sub-pixel is close to acorresponding position as much as possible.

The technical solutions of the present disclosure will be furtherdescribed below in conjunction with the drawings and specificembodiments.

In one embodiment, as shown in FIG. 2, first sub-pixels 01 and thirdsub-pixels 03 are arranged alternately to form a plurality of firstsub-pixel rows, and second sub-pixels 02 form a plurality of secondsub-pixel rows. The first sub-pixel rows and the second sub-pixel rowsare arranged alternately in the column direction. Connection lines ofcenter points of two first sub-pixels 01 and two third sub-pixels 03arranged in two adjacent rows and two adjacent columns form a firstvirtual quadrilateral T (a small solid box in FIG. 2), the two firstsub-pixels 01 are located at two vertex angles of the first virtualquadrilateral T which are opposite to each other, the two thirdsub-pixels 03 are located at the other two vertex angles of the firstvirtual quadrilateral T which are opposite to each other, and one secondsub-pixel 02 is located within the first virtual quadrilateral T. Acenter point of the second sub-pixel 02 may or may not coincide with acenter point Z of the first virtual quadrilateral T. P is a distancebetween center points of two adjacent second sub-pixels 02 in eachsecond sub-pixel row.

As shown in FIG. 2, in the first virtual quadrilateral T, a connectionline of center points of the first sub-pixel 01 and the third sub-pixel03 adjacent to each other in the column direction is parallel to thecolumn direction. There are two connection lines formed by center pointsof the first sub-pixels 01 and the third sub-pixels 03 adjacent to eachother in the row direction. One of the two connection lines is parallelto the row direction, and the other of the two connection lines is notparallel to the row direction. In this way, the first virtualquadrilateral T is a trapezoid having two right angles. Two interiorangles each not being a right angle of the first virtual quadrilateral Tinclude an acute angle a and an obtuse angle (180°-a). In someembodiments, the acute angle a may be 86°. Of course, the acute angle ais not limited to 86°, and may also be adjusted to another value.

As shown in FIG. 2, in each first virtual quadrilateral T, a distancebetween a side of the second sub-pixel 02 and a side of each of thefirst sub-pixels 01 adjacent to the second sub-pixel 02 may be L1, and adistance between a side of the second sub-pixel 02 and a side of each ofthe third sub-pixels 03 adjacent to the second sub-pixel 02 may be L2.

As shown in FIG. 3, in each first virtual quadrilateral T, a distancebetween a side of the second sub-pixel 02 and a side of each of thefirst sub-pixels 01 adjacent to the second sub-pixel 02 may be L1, adistance between a side of the second sub-pixel 02 and a side of onethird sub-pixel 03 adjacent to the second sub-pixel 02 may be L1, and adistance between a side of the second sub-pixel 02 and a side of theother third sub-pixel 03 adjacent to the second sub-pixel 02 may be L2.

As shown in FIG. 4, in each first virtual quadrilateral T, a distancebetween a side of the second sub-pixel 02 and a side of each of thethird sub-pixels 03 adjacent to the second sub-pixel 02 may be L1, adistance between a side of the second sub-pixel 02 and a side of onefirst sub-pixel 01 adjacent to the second sub-pixel 02 may be L1, and adistance between a side of the second sub-pixel 02 and a side of theother first sub-pixel 01 adjacent to the second sub-pixel 02 may be L2.

As shown in FIG. 5, in each first virtual quadrilateral T, a distancebetween a side of the second sub-pixel 02 and a side of each of thefirst sub-pixels 01 adjacent to the second sub-pixel 02 may be L1, and adistance between a side of the second sub-pixel 02 and a side of each ofthe third sub-pixels 03 adjacent to the second sub-pixel 02 may be L2.

As shown in FIGS. 2 to 5, the center point of the second sub-pixel 02 isnot at an intersection position of two diagonal lines of the firstvirtual quadrilateral T. Each diagonal line of the first virtualquadrilateral T is a connection line of center points of the firstsub-pixel 01 and the third sub-pixel 03 opposite to each other. That is,distances from the center point of the second sub-pixel 02 to the centerpoints of two first sub-pixels 01 adjacent to the second sub-pixel 02are not equal to each other, and distances from the center point of thesecond sub-pixel 02 to the center points of two third sub-pixels 03adjacent to the second sub-pixel 02 are not equal to each other.

The side of the sub-pixel is a side of a light-emitting region of thesub-pixel, and the center point of the sub-pixel is a center point ofthe light-emitting region of the sub-pixel.

Four adjacent first virtual quadrilaterals T arranged in two columns andtwo rows form a large virtual polygon (a largest solid box in FIG. 2),i.e., the second virtual polygon. The first sub-pixels 01 are located ata center position and four vertex angles positions of the second virtualpolygon, the third sub-pixels 03 are located at midpoint positions ofsides of the second virtual polygon, and the second virtual polygon maybe a virtual square.

As shown in FIG. 6, a second virtual polygon includes two adjacent firstvirtual quadrilaterals T in the column direction. A length of a firstside of a first virtual quadrilateral T in the column direction is P1, alength of a second side of a second first virtual quadrilateral T in thecolumn direction is P2, the first side and the second side are on a samestraight line, P1 is smaller than P2, and P1+P2=P3. A length of a thirdside of the first virtual quadrilateral T in the column direction is P2,a length of a fourth side of the second first virtual quadrilateral T inthe column direction is P1, the third side and the fourth side are on asame straight line, P1 is smaller than P2, and P1+P2=P3. A distancebetween the center points of the first sub-pixel 01 and the thirdsub-pixel 03 adjacent to each other in the row direction may be P3/2.

Through the above pixel arrangement, brightness center points 04 oflight-emitting pixel points each composed of the first sub-pixel 01, thesecond sub-pixel 02 and the third sub-pixel 03 may be distributed moreevenly, so as to improve the display effect.

In addition, as shown in FIGS. 2 to 6, the second sub-pixels 02 arearranged in a staggered manner with respect to the first sub-pixels andthe third sub-pixels, so as to increase a margin when manufacturing ametal mask. In this way, a distance D between openings (corresponding toa smallest solid box surrounding the second sub-pixel 02) on a mask formanufacturing the second sub-pixels 02 is increased under a sameaperture ratio, so as to increase the margin when manufacturing themetal mask, thereby to achieve a higher resolution.

As shown in FIG. 6, the second virtual polygon includes the two adjacentfirst virtual quadrilaterals T in the column direction. In the firstvirtual quadrilateral T, a distance between a side of the secondsub-pixel 02 and a side of each of the first sub-pixels 01 or the thirdsub-pixels 03 adjacent to the second sub-pixel 02 may be L1. In thesecond first virtual quadrilateral T, a distance between a side of thesecond sub-pixel 02 and a side of each of the first sub-pixels 01 or thethird sub-pixels 03 adjacent to the second sub-pixel 02 may be L1. Thesecond sub-pixel 02 in the first virtual quadrilateral T has a differentshape from the second sub-pixel 02 in the second first virtualquadrilateral T, and has a same area as the second sub-pixel 02 in thesecond first virtual quadrilateral T.

As shown in FIG. 7, a second virtual polygon includes two adjacent firstvirtual quadrilaterals T in the column direction. In a first virtualquadrilateral T, a distance between a side of the second sub-pixel 02and a side of each of the first sub-pixels 01 adjacent to the secondsub-pixel 02 may be L1, and a distance between a side of the secondsub-pixel 02 and a side of each of the third sub-pixels 03 adjacent tothe second sub-pixel 02 may be L2. In a second first virtualquadrilateral T, a distance between a side of the second sub-pixel 02and a side of each of the first sub-pixels 01 adjacent to the secondsub-pixel 02 may be L3, and a distance between a side of the secondsub-pixel 02 and a side of each of the third sub-pixels 03 adjacent tothe second sub-pixel 02 may be L4. L1 may be equal to L3, and L2 may beequal to L4, so that the two second sub-pixels 02 in the two adjacentfirst virtual quadrilaterals T respectively in the column direction havethe same shape.

As shown in FIG. 8, a second virtual polygon includes two adjacent firstvirtual quadrilaterals T in the column direction. In a first virtualquadrilateral T, a distance between a side of the second sub-pixel 02and a side of each of the first sub-pixels 01 adjacent to the secondsub-pixel 02 may be R1, and a distance between a side of the secondsub-pixel 02 and a side of each of the third sub-pixels 03 adjacent tothe second sub-pixel 02 may be R3. In a second first virtualquadrilateral T, a distance between a side of the second sub-pixel 02and a side of each of the first sub-pixels 01 adjacent to the secondsub-pixel 02 may be R2, and a distance between a side of the secondsub-pixel 02 and a side of each of the third sub-pixels 03 adjacent tothe second sub-pixel 02 may be R4. R1 may be not equal to R2, and R3 maybe not equal to R4.

In the embodiment, values of the acute angles a in the two adjacentfirst virtual quadrilaterals T in the column direction may be equal toeach other, and positions thereof are not adjacent to each other in thecolumn direction. Values of the acute angles a in the two adjacent firstvirtual quadrilaterals T in the row direction may be equal to eachother.

As shown in FIGS. 2 to 8, the second virtual polygon includes twoadjacent first virtual quadrilaterals T in the column direction. In thefirst virtual quadrilateral T, a length of a connection line of thecenter points of two first sub-pixels 01 opposite to each other islarger than a length of a connection line of the center points of twothird sub-pixels 03 opposite to each other. In the second first virtualquadrilateral T, a length of a connection line of the center points oftwo third sub-pixels 03 opposite to each other is larger than a lengthof a connection line of the center points of two first sub-pixels 01opposite to each other.

As shown in FIG. 9, in the column direction, connection lines of thesecond sub-pixels 02 are not on a same straight line, so as to form amore even distribution of brightness center points of synthesized whitepoints, thereby to improve the display effect of the display device. Asshown in FIG. 9, Z1 denotes a brightness center point of a white pointof the display substrate in the embodiment, and Z2 denotes a brightnesscenter point of a white point of a conventional display substrate. Inthe two adjacent first virtual quadrilaterals T in the column direction,a position of the brightness center point of the white point in thefirst virtual quadrilateral T is offset downward to the right, aposition of the brightness center point of the white point in the secondfirst virtual quadrilateral T is offset downward to the left, so as toenable a brightness center point of a synthesized white point of everytwo adjacent first virtual quadrilaterals T in the column direction toclose to a same straight line. As compared with the solution in therelated art, the brightness center points of white points of the displaysubstrate in the embodiment are distributed in a more even manner, so asto provide a better display effect.

As shown in FIG. 9, sub-pixels in a dashed box form one pixel repetitionunit, which includes two first sub-pixels 01 and two third sub-pixels 03located in the same first virtual quadrilateral, and four secondsub-pixels 02 located in the same second virtual polygon as one of thetwo first sub-pixels 01 and surrounding the one of the two firstsub-pixels 01.

In the embodiment, each first sub-pixel 01 has a same shape, each thirdsub-pixel 03 has a same shape, and the first sub-pixel 01 has the sameshape as the third sub-pixel 03.

Based on a same invention concept, an organic electroluminescencedisplay panel including the above-mentioned display substrate is furtherprovided in the embodiments of the present disclosure. The displaysubstrate may be the display substrate according to any one of theabove-mentioned embodiments of the present disclosure. The adjacentfirst virtual quadrilaterals are arranged in the row direction and thecolumn direction with shared sides. That is, two adjacent displaysubstrates share the first sub-pixel 01 and the third sub-pixel 03located on a side shared by adjacent first virtual quadrilaterals. Sincea principle used to solve the problems in the organic electroluminescentdisplay panel is similar to that in the above-mentioned displaysubstrate, the organic electroluminescent display panel may beimplemented through referring to the embodiments about the pixelarrangement structure, and thus is described in a simple manner.

The adjacent first virtual quadrilaterals are arranged in the rowdirection and the column direction with shared sides. That is, twoadjacent first virtual quadrilaterals in the row direction share oneside in the column direction, and two adjacent first virtualquadrilaterals in the column direction share one side in the rowdirection.

When the adjacent first virtual quadrilaterals share the side, one sideof the two adjacent first virtual quadrilaterals may be the same, butshapes of the two adjacent first virtual quadrilaterals may be differentfrom each other, for example, interior angles thereof may be differentfrom each other.

In some embodiments, the organic electroluminescent display panelfurther includes a pixel definition layer, the pixel definition layerincludes a plurality of pixel definition layer openings, each of thefirst sub-pixels, the second sub-pixels and the third sub-pixelscorresponds to one pixel definition layer opening, and each of the firstsub-pixels, the second sub-pixels and the third sub-pixels has anapproximately same shape as the corresponding pixel definition layeropening.

In some embodiments, each first sub-pixel includes multiple film layers,and the multiple film layers of the first sub-pixel at least partiallycover a region outside the corresponding pixel definition layer opening;and/or, each second sub-pixel includes multiple film layers, and themultiple film layers of the second sub-pixel at least partially cover aregion outside the corresponding pixel definition layer opening; and/or,each third sub-pixel includes multiple film layers, and the multiplefilm layers of the third sub-pixel at least partially cover a regionoutside the corresponding pixel definition layer opening.

In some embodiments, at least part of the pixel definition layeropenings have different shapes or different areas.

In some embodiments, at least part of the pixel definition layeropenings corresponding to the second sub-pixels have different shapes ordifferent areas.

In some embodiments, smallest distances from the at least part of thepixel definition layer openings corresponding to the second sub-pixelsto adjacent openings are different from each other.

Based on the same invention concept, a display device is furtherprovided in the embodiments of the present disclosure. The displaydevice may include the organic electroluminescence display panelaccording to any one of the above-mentioned embodiments of the presentdisclosure. The display device may be any product or member having adisplay function, e.g., a mobile phone, a tablet computer, a television,a display, a laptop computer, a digital photo frame or a navigator. Thedisplay device may be implemented through referring to the embodimentsabout the organic electroluminescence display panel, and thus isdescribed in a simple manner.

Based on the same invention concept, a high-precision metal mask isfurther provided in the embodiments of the present disclosure. Thehigh-precision metal mask is used for manufacturing the displaysubstrate according to any one of the above-mentioned embodiments of thepresent disclosure, and includes a plurality of opening regions. Theplurality of opening regions include a first opening regioncorresponding to a position of each first sub-pixel, a second openingregion corresponding to a position of each second sub-pixel, and a thirdopening region corresponding to a position of each third sub-pixel.Since a principle used to solve the problems in the high-precision metalmask is similar to that in the above-mentioned display substrate, thehigh-precision metal mask may be implemented through referring to theembodiments about the display substrate, and thus is described in asimple manner.

In some embodiments, each first sub-pixel includes multiple film layers,each second sub-pixel includes multiple film layers, each thirdsub-pixel includes multiple film layers, a shape and an arrangement ofthe first opening region are approximately the same with a shape and anarrangement of at least one film layer in the first sub-pixelrespectively, a shape and an arrangement of the third opening region areapproximately the same with a shape and an arrangement of at least onefilm layer in the third sub-pixel respectively, and a shape and anarrangement of the second opening region are approximately the same witha shape and an arrangement of at least one film layer in the secondsub-pixel respectively.

In some embodiments, at least two of the plurality of second openingregions corresponding to positions of the second sub-pixels in thehigh-precision metal mask each has a different shape or a different areafrom the other second opening regions.

Optionally, in the high-precision metal mask of the embodiments of thepresent disclosure, a distance between adjacent second opening regionsis larger than or equal to a process limit distance, so as to meetrequirements on the process.

In order to make the objects, the technical solutions and the advantagesof the present disclosure more apparent, the present disclosure will bedescribed hereinafter in a clear and complete manner in conjunction withthe drawings and embodiments. Obviously, the following embodimentsmerely relate to a part of, rather than all of, the embodiments of thepresent disclosure, and based on these embodiments, a person skilled inthe art may, without any creative effort, obtain the other embodiments,which also fall within the scope of the present disclosure.

It should be further appreciated that, the above embodiments have beendescribed in a progressive manner, and the same or similar contents inthe embodiments have not been repeated, i.e., each embodiment has merelyfocused on the difference from the others. Especially, the productembodiments are substantially similar to the method embodiments, andthus have been described in a simple manner.

Unless otherwise defined, any technical or scientific term used hereinshall have the common meaning understood by a person of ordinary skills.Such words as “first” and “second” used in the specification and claimsare merely used to differentiate different components rather than torepresent any order, number or importance. Such words as “include” or“including” intends to indicate that an element or object before theword contains an element or object or equivalents thereof listed afterthe word, without excluding any other element or object. Such words as“connect/connected to” or “couple/coupled to” may include electricalconnection, direct or indirect, rather than to be limited to physical ormechanical connection. Such words as “on”, “under”, “left” and “right”are merely used to represent relative position relationship, and when anabsolute position of the object is changed, the relative positionrelationship will be changed too.

It should be appreciated that, in the case that such an element aslayer, film, region or substrate is arranged “on” or “under” anotherelement, it may be directly arranged “on” or “under” the other element,or an intermediate element may be arranged therebetween.

In the above description, the features, structures, materials orcharacteristics may be combined in any embodiment or embodiments in anappropriate manner.

The above are merely specific embodiments of the present disclosure, buta protection scope of the present disclosure is not limited thereto. Anymodifications or replacements that would easily occurred to a personskilled in the art, without departing from the technical scope disclosedin the disclosure, should be encompassed in the protection scope of thepresent disclosure. Therefore, the protection scope of the presentdisclosure shall be subject to the protection scope of the claims.

1. A display substrate, comprising a plurality of first sub-pixels, aplurality of second sub-pixels and a plurality of third sub-pixels,wherein in a first direction, the first sub-pixels and the thirdsub-pixels are arranged alternately to form a plurality of firstsub-pixel rows, the second sub-pixels form a plurality of secondsub-pixel rows, the first sub-pixel rows and the second sub-pixel rowsare arranged alternately in a second direction, connection lines ofcenter points of two first sub-pixels and two third sub-pixels arrangedin two adjacent rows and two adjacent columns form a first virtualquadrilateral, the two first sub-pixels are located at two vertex anglesof the first virtual quadrilateral which are opposite to each other, onesecond sub-pixel is located within the first virtual quadrilateral, thefirst virtual quadrilateral comprises two interior angles each beingequal to 90° and two interior angles each being not equal to 90°, andthe two interior angles each being not equal to 90° comprise a firstinterior angle and a second interior angle; in a same first virtualquadrilateral, a distance between a center point of a first sub-pixellocated at the first interior angle and a center point of a thirdsub-pixel located at the second interior angle on a first straight lineis x, the first straight line is perpendicular to a common side of thetwo interior angles each being equal to 90°, a value range of the firstinterior angle a is (h−10°, h+10°), and h is calculated through one ofthe following formulas:${h = {{90^{\circ}} - {\arctan\left( \frac{x}{P} \right)}}};$${h = {{90^{\circ}} + {\arctan\left( \frac{x}{P} \right)}}};$ wherein Pis a distance between center points of two adjacent second sub-pixels ineach second sub-pixel row.
 2. The display substrate according to claim1, wherein x ranges from 1 μm to 10 μm.
 3. The display substrateaccording to claim 1, wherein the first interior angle a is larger thanor equal to 70° and smaller than 90°.
 4. The display substrate accordingto claim 1, wherein a connection line of center points of two adjacentfirst sub-pixels in the first direction is parallel to the firstdirection, a connection line of center points of two adjacent thirdsub-pixels in the first direction is parallel to the first direction,and a connection line of center points of the first sub-pixel and thethird sub-pixel adjacent to each other in the second direction isparallel to the second direction.
 5. The display substrate according toclaim 4, wherein a distance between the two adjacent first sub-pixels inthe first direction is equal to a distance between two adjacent firstsub-pixels in the second direction; and/or a distance between the twoadjacent third sub-pixels in the first direction is equal to a distancebetween two adjacent third sub-pixels in the second direction.
 6. Thedisplay substrate according to claim 1, wherein the first direction isapproximately perpendicular to the second direction, the first directionis one of a row direction and a column direction, and the seconddirection is the other of the row direction and the column direction. 7.The display substrate according to claim 1, wherein four first virtualquadrilaterals arranged in two columns and two rows form a secondvirtual polygon with shared sides, the second virtual polygon comprisesfour second sub-pixels, five first sub-pixels and four third sub-pixels,the four second sub-pixels are located within the four first virtualquadrilaterals respectively, one of the five first sub-pixels issurrounded by the other four first sub-pixels, the other four firstsub-pixels and the four third sub-pixels are located on sides or vertexangles of the second virtual polygon respectively, and along the sidesof the second virtual polygon in both a clockwise sequence and acounterclockwise sequence, the other four first sub-pixels and the fourthird sub-pixels located on the sides or vertex angles of the secondvirtual polygon respectively are arranged alternately; or the secondvirtual polygon comprises four second sub-pixels, five third sub-pixelsand four first sub-pixels, the four second sub-pixels are located withinthe four first virtual quadrilaterals respectively, one of the fivethird sub-pixels is surrounded by the other four third sub-pixels, theother four third sub-pixels and the four first sub-pixels are located onsides or vertex angles of the second virtual polygon respectively, andalong the sides of the second virtual polygon in both a clockwisesequence and a counterclockwise sequence, the other four thirdsub-pixels and the four first sub-pixels located on the sides or vertexangles of the second virtual polygon respectively are arrangedalternately.
 8. The display substrate according to claim 7, wherein acenter point of the first sub-pixel surrounded by the other four firstsub-pixels does not coincide with a center point of a quadrilateralformed by the other four first sub-pixels, a center point of the thirdsub-pixel surrounded by the other four third sub-pixels does notcoincide with a center point of a quadrilateral formed by the other fourthird sub-pixels.
 9. The display substrate according to claim 7, furthercomprising a plurality of pixel repetition units, each pixel repetitionunit comprises two first sub-pixels and two third sub-pixels located inthe same first virtual quadrilateral, and four second sub-pixels locatedin a same second virtual polygon as one of the two first sub-pixels andsurrounding the one of the two first sub-pixels.
 10. The displaysubstrate according to claim 7, wherein the second virtual polygon is arectangle.
 11. The display substrate according to claim 1, wherein aconnection line of center points of at least part of the secondsub-pixels arranged in the first direction is approximately parallel tothe first direction, and a connection line of center points of at leastpart of the second sub-pixels arranged in the second direction isapproximately parallel to the second direction.
 12. The displaysubstrate according to claim 1, wherein each of the second sub-pixelshas a same shape and a same area.
 13. The display substrate according toclaim 1, wherein, in at least one first virtual quadrilateral, adistance between the second sub-pixel and one of the two thirdsub-pixels is L1, a distance between the second sub-pixel and the otherof the two third sub-pixels is L2, and a distance between the secondsub-pixel and each of the two first sub-pixels is L1; or in at least onefirst virtual quadrilateral, a distance between the second sub-pixel andeach of the two third sub-pixels and a distance between the secondsub-pixel and each of the two first sub-pixels are L1; or in at leastone first virtual quadrilateral, a distance between the second sub-pixeland each of the two third sub-pixels is L1, a distance between thesecond sub-pixel and one of the two first sub-pixels is L1, and adistance between the second sub-pixel and the other of the two firstsub-pixels is L2, or in at least one first virtual quadrilateral, adistance between the second sub-pixel and each of the two thirdsub-pixels is L2, and a distance between the second sub-pixel and eachof the two first sub-pixels is L1; wherein L2 is larger than L1, and aspacing between sub-pixels is a minimum distance between sides of thesub-pixels.
 14. The display substrate according to claim 1, wherein, inat least one first virtual quadrilateral, a center point of the secondsub-pixel does not coincide with a center point of the first virtualquadrilateral.
 15. The display substrate according to claim 1, whereinan angle between a connection line of two adjacent second sub-pixels inthe second direction and the second direction is larger than or equal to0° and smaller than 90°.
 16. The display substrate according to claim 1,wherein two adjacent first virtual quadrilaterals in the seconddirection comprise a first virtual quadrilateral A and a first virtualquadrilateral B, in the first virtual quadrilateral A, a distancebetween a center point of the second sub-pixel and a center point of thefirst sub-pixel adjacent to the second sub-pixel is R1, and a distancebetween the center point of the second sub-pixel and a center point ofthe third sub-pixel adjacent to the second sub-pixel is R3; in the firstvirtual quadrilateral B, a distance between a center point of the secondsub-pixel and a center point of the first sub-pixel adjacent to thesecond sub-pixel is R2, and a distance between the center point of thesecond sub-pixel and a center point of the third sub-pixel adjacent tothe second sub-pixel is R4; wherein R1 is not equal to R2, and/or, R3 isnot equal to R4.
 17. The display substrate according to claim 1, whereintwo adjacent first virtual quadrilaterals in the second directioncomprise a first virtual quadrilateral A and a first virtualquadrilateral B, the first virtual quadrilateral A comprises a firstside and a third side that are parallel to the second direction, thefirst virtual quadrilateral B comprises a second side and a fourth sidethat are parallel to the second direction, the first side and the secondside are on a same straight line, the third side and the fourth side areon a same straight line, a length of the first side is smaller than alength of the second side, a length of the fourth side is smaller than alength of the third side, the length of the first side is equal to thelength of the fourth side, and the length of the second side is equal tothe length of the third side. 18-26. (canceled)
 27. An organicelectroluminescence display panel, comprising the display substrateaccording to claim
 1. 28-29. (canceled)
 30. A display device, comprisingthe organic electroluminescence display panel according to claim
 27. 31.A high-precision metal mask for manufacturing the display substrateaccording to claim 1, comprising: a plurality of opening regions,wherein the plurality of opening regions comprise a first opening regioncorresponding to a position of each first sub-pixel, a second openingregion corresponding to a position of each second sub-pixel, and a thirdopening region corresponding to a position of each third sub-pixel. 32.(canceled)